Add .dropboxignore directory to exclude folders without using selective sync

I would like to add my name to the request to include .lock files in the list of file types automatically excluded from sync.  I am new to Dropbox and have been experimenting with using Dropbox to keep a password utility database file synchronized across devices. (Keepass). This creates a temporary file with an additional files extension suffix when you open the main database file (databasefile.kdb.lock ) which gets deleted as soon as you close the programme. It can create problems across the devices. It would be handy to be able to exclude this.